1 RETURN INTENSITY PERIOD RAINFALL 5 56.95 10 68.83 20 71.36 30 76.57 50 81.70 80 84.02 1 RAINFALL HYETOGRAPH TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .42 .50 .52 .56 .60 .61 .2 1.46 1.77 1.83 1.97 2.10 2.16 .3 3.71 4.48 4.65 4.98 5.32 5.47 .4 6.55 7.92 8.21 8.81 9.40 9.67 .5 8.16 9.86 10.23 10.97 11.71 12.04 .6 7.38 8.91 9.24 9.92 10.58 10.88 .7 7.60 9.19 9.53 10.22 10.91 11.22 .8 7.14 8.62 8.94 9.59 10.24 10.53 .9 7.66 9.26 9.60 10.30 10.99 11.30 1.0 6.87 8.31 8.61 9.24 9.86 10.14 1 SR-1 1 ( NA ) STRIP NUMBER = 3 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = .98 (COFF) RUNOFF COEFFICIENT = .76 (BET ) INITIAL CONCENTRATION TIME = .00 ZONING LENGTH AREA(I) ACCUMU. WIDTH TIME NUMBER (KM) (SQ.KM) AREA(I) (KM) (HR) 1 .15 .020 .020 .133 .003 2 .50 .270 .290 .540 .073 3 .07 .010 .300 .143 .003 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 .72 .300 C1 = .778 C2 = .222 1 AREA-ROUTING UNIT-HYDROGRAPH TIME AREA I=2.7780 (I1 + I2)/2 C1 * (1) C2 * (4) (2) + (3) (HR.) (KM**2) * AREA = (1) = (2) = (3) = (4) .1 .300 .833 .417 .324 .000 .3242 .2 .000 .000 .417 .324 .072 .3962 .3 .000 .000 .000 .000 .088 .0880 .4 .000 .000 .000 .000 .020 .0195 .5 .000 .000 .000 .000 .004 .0043 .6 .000 .000 .000 .000 .001 .0010 .7 .000 .000 .000 .000 .000 .0002 .8 .000 .000 .000 .000 .000 .0000 .9 .000 .000 .000 .000 .000 .0000 1.0 .000 .000 .000 .000 .000 .0000 1.1 .000 .000 .000 .000 .000 .0000 1.2 .000 .000 .000 .000 .000 .0000 1.3 .000 .000 .000 .000 .000 .0000 1.4 .000 .000 .000 .000 .000 .0000 1.5 .000 .000 .000 .000 .000 .0000 1.6 .000 .000 .000 .000 .000 .0000 1.7 .000 .000 .000 .000 .000 .0000 1.8 .000 .000 .000 .000 .000 .0000 1.9 .000 .000 .000 .000 .000 .0000 2.0 .000 .000 .000 .000 .000 .0000 2.1 .000 .000 .000 .000 .000 .0000 2.2 .000 .000 .000 .000 .000 .0000 2.3 .000 .000 .000 .000 .000 .0000 2.4 .000 .000 .000 .000 .000 .0000 2.5 .000 .000 .000 .000 .000 .0000 2.6 .000 .000 .000 .000 .000 .0000 2.7 .000 .000 .000 .000 .000 .0000 2.8 .000 .000 .000 .000 .000 .0000 2.9 .000 .000 .000 .000 .000 .0000 3.0 .000 .000 .000 .000 .000 .0000 3.1 .000 .000 .000 .000 .000 .0000 3.2 .000 .000 .000 .000 .000 .0000 3.3 .000 .000 .000 .000 .000 .0000 3.4 .000 .000 .000 .000 .000 .0000 3.5 .000 .000 .000 .000 .000 .0000 3.6 .000 .000 .000 .000 .000 .0000 3.7 .000 .000 .000 .000 .000 .0000 3.8 .000 .000 .000 .000 .000 .0000 3.9 .000 .000 .000 .000 .000 .0000 4.0 .000 .000 .000 .000 .000 .0000 4.1 .000 .000 .000 .000 .000 .0000 4.2 .000 .000 .000 .000 .000 .0000 4.3 .000 .000 .000 .000 .000 .0000 4.4 .000 .000 .000 .000 .000 .0000 4.5 .000 .000 .000 .000 .000 .0000 4.6 .000 .000 .000 .000 .000 .0000 4.7 .000 .000 .000 .000 .000 .0000 4.8 .000 .000 .000 .000 .000 .0000 4.9 .000 .000 .000 .000 .000 .0000 5.0 .000 .000 .000 .000 .000 .0000 1 FLOOD HYDROGRAPH BY AREA-ROUTING UNIT-HYDROGRAPH METHOD BASIN AREA = .30SQ.KM BASIN LENGTH = .98KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .10 .12 .13 .14 .15 .15 .2 .49 .59 .61 .65 .70 .72 .3 1.38 1.67 1.73 1.86 1.98 2.04 .4 2.84 3.43 3.55 3.81 4.07 4.18 .5 4.26 5.14 5.33 5.72 6.10 6.28 .6 4.77 5.77 5.98 6.42 6.85 7.04 .7 4.75 5.74 5.95 6.39 6.81 7.01 .8 4.69 5.66 5.87 6.30 6.72 6.91 .9 4.69 5.66 5.87 6.30 6.72 6.91 1.0 2.93 3.54 3.67 3.94 4.20 4.32 1.1 .65 .79 .81 .87 .93 .96 1.2 .14 .17 .18 .19 .21 .21 1.3 .03 .04 .04 .04 .05 .05 1.4 .01 .01 .01 .01 .01 .01 1.5 .00 .00 .00 .00 .00 .00 1.6 .00 .00 .00 .00 .00 .00 1.7 .00 .00 .00 .00 .00 .00 1.8 .00 .00 .00 .00 .00 .00 1.9 .00 .00 .00 .00 .00 .00 2.0 .00 .00 .00 .00 .00 .00 2.1 .00 .00 .00 .00 .00 .00 2.2 .00 .00 .00 .00 .00 .00 2.3 .00 .00 .00 .00 .00 .00 2.4 .00 .00 .00 .00 .00 .00 2.5 .00 .00 .00 .00 .00 .00 2.6 .00 .00 .00 .00 .00 .00 2.7 .00 .00 .00 .00 .00 .00 2.8 .00 .00 .00 .00 .00 .00 2.9 .00 .00 .00 .00 .00 .00 3.0 .00 .00 .00 .00 .00 .00 3.1 .00 .00 .00 .00 .00 .00 3.2 .00 .00 .00 .00 .00 .00 3.3 .00 .00 .00 .00 .00 .00 3.4 .00 .00 .00 .00 .00 .00 3.5 .00 .00 .00 .00 .00 .00 3.6 .00 .00 .00 .00 .00 .00 3.7 .00 .00 .00 .00 .00 .00 3.8 .00 .00 .00 .00 .00 .00 3.9 .00 .00 .00 .00 .00 .00 4.0 .00 .00 .00 .00 .00 .00 4.1 .00 .00 .00 .00 .00 .00 4.2 .00 .00 .00 .00 .00 .00 4.3 .00 .00 .00 .00 .00 .00 4.4 .00 .00 .00 .00 .00 .00 4.5 .00 .00 .00 .00 .00 .00 4.6 .00 .00 .00 .00 .00 .00 4.7 .00 .00 .00 .00 .00 .00 4.8 .00 .00 .00 .00 .00 .00 4.9 .00 .00 .00 .00 .00 .00 5.0 .00 .00 .00 .00 .00 .00 1 RETURN INTENSITY PERIOD RAINFALL 5 56.95 10 68.83 20 71.36 30 76.57 50 81.70 80 84.02 1 RAINFALL HYETOGRAPH TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .42 .50 .52 .56 .60 .61 .2 1.46 1.77 1.83 1.97 2.10 2.16 .3 3.71 4.48 4.65 4.98 5.32 5.47 .4 6.55 7.92 8.21 8.81 9.40 9.67 .5 8.16 9.86 10.23 10.97 11.71 12.04 .6 7.38 8.91 9.24 9.92 10.58 10.88 .7 7.60 9.19 9.53 10.22 10.91 11.22 .8 7.14 8.62 8.94 9.59 10.24 10.53 .9 7.66 9.26 9.60 10.30 10.99 11.30 1.0 6.87 8.31 8.61 9.24 9.86 10.14 1 SR-2 1 ( NA ) STRIP NUMBER = 4 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 1.63 (COFF) RUNOFF COEFFICIENT = .76 (BET ) INITIAL CONCENTRATION TIME = .00 ZONING LENGTH AREA(I) ACCUMU. WIDTH TIME NUMBER (KM) (SQ.KM) AREA(I) (KM) (HR) 1 .13 .020 .020 .154 .003 2 .50 .390 .410 .778 .048 3 .50 .360 .770 .720 .029 4 .50 .230 1.000 .460 .033 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 1.43 .909 .2 1.63 .091 C1 = .614 C2 = .386 1 AREA-ROUTING UNIT-HYDROGRAPH TIME AREA I=2.7780 (I1 + I2)/2 C1 * (1) C2 * (4) (2) + (3) (HR.) (KM**2) * AREA = (1) = (2) = (3) = (4) .1 .909 2.524 1.262 .775 .000 .7747 .2 .091 .254 1.389 .853 .299 1.1517 .3 .000 .000 .127 .078 .445 .5227 .4 .000 .000 .000 .000 .202 .2019 .5 .000 .000 .000 .000 .078 .0780 .6 .000 .000 .000 .000 .030 .0301 .7 .000 .000 .000 .000 .012 .0116 .8 .000 .000 .000 .000 .004 .0045 .9 .000 .000 .000 .000 .002 .0017 1.0 .000 .000 .000 .000 .001 .0007 1.1 .000 .000 .000 .000 .000 .0003 1.2 .000 .000 .000 .000 .000 .0001 1.3 .000 .000 .000 .000 .000 .0000 1.4 .000 .000 .000 .000 .000 .0000 1.5 .000 .000 .000 .000 .000 .0000 1.6 .000 .000 .000 .000 .000 .0000 1.7 .000 .000 .000 .000 .000 .0000 1.8 .000 .000 .000 .000 .000 .0000 1.9 .000 .000 .000 .000 .000 .0000 2.0 .000 .000 .000 .000 .000 .0000 2.1 .000 .000 .000 .000 .000 .0000 2.2 .000 .000 .000 .000 .000 .0000 2.3 .000 .000 .000 .000 .000 .0000 2.4 .000 .000 .000 .000 .000 .0000 2.5 .000 .000 .000 .000 .000 .0000 2.6 .000 .000 .000 .000 .000 .0000 2.7 .000 .000 .000 .000 .000 .0000 2.8 .000 .000 .000 .000 .000 .0000 2.9 .000 .000 .000 .000 .000 .0000 3.0 .000 .000 .000 .000 .000 .0000 3.1 .000 .000 .000 .000 .000 .0000 3.2 .000 .000 .000 .000 .000 .0000 3.3 .000 .000 .000 .000 .000 .0000 3.4 .000 .000 .000 .000 .000 .0000 3.5 .000 .000 .000 .000 .000 .0000 3.6 .000 .000 .000 .000 .000 .0000 3.7 .000 .000 .000 .000 .000 .0000 3.8 .000 .000 .000 .000 .000 .0000 3.9 .000 .000 .000 .000 .000 .0000 4.0 .000 .000 .000 .000 .000 .0000 4.1 .000 .000 .000 .000 .000 .0000 4.2 .000 .000 .000 .000 .000 .0000 4.3 .000 .000 .000 .000 .000 .0000 4.4 .000 .000 .000 .000 .000 .0000 4.5 .000 .000 .000 .000 .000 .0000 4.6 .000 .000 .000 .000 .000 .0000 4.7 .000 .000 .000 .000 .000 .0000 4.8 .000 .000 .000 .000 .000 .0000 4.9 .000 .000 .000 .000 .000 .0000 5.0 .000 .000 .000 .000 .000 .0000 1 FLOOD HYDROGRAPH BY AREA-ROUTING UNIT-HYDROGRAPH METHOD BASIN AREA = 1.00SQ.KM BASIN LENGTH = 1.63KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .24 .30 .31 .33 .35 .36 .2 1.23 1.48 1.54 1.65 1.76 1.81 .3 3.63 4.39 4.55 4.88 5.21 5.35 .4 7.75 9.37 9.71 10.42 11.12 11.43 .5 12.26 14.82 15.37 16.49 17.59 18.09 .6 14.75 17.83 18.49 19.84 21.17 21.77 .7 15.44 18.66 19.34 20.75 22.14 22.77 .8 15.53 18.76 19.45 20.87 22.27 22.91 .9 15.58 18.83 19.52 20.95 22.35 22.98 1.0 11.40 13.78 14.29 15.33 16.36 16.82 1.1 4.86 5.87 6.09 6.53 6.97 7.17 1.2 1.88 2.27 2.35 2.52 2.69 2.77 1.3 .72 .88 .91 .97 1.04 1.07 1.4 .28 .34 .35 .38 .40 .41 1.5 .11 .13 .14 .15 .16 .16 1.6 .04 .05 .05 .06 .06 .06 1.7 .02 .02 .02 .02 .02 .02 1.8 .01 .01 .01 .01 .01 .01 1.9 .00 .00 .00 .00 .00 .00 2.0 .00 .00 .00 .00 .00 .00 2.1 .00 .00 .00 .00 .00 .00 2.2 .00 .00 .00 .00 .00 .00 2.3 .00 .00 .00 .00 .00 .00 2.4 .00 .00 .00 .00 .00 .00 2.5 .00 .00 .00 .00 .00 .00 2.6 .00 .00 .00 .00 .00 .00 2.7 .00 .00 .00 .00 .00 .00 2.8 .00 .00 .00 .00 .00 .00 2.9 .00 .00 .00 .00 .00 .00 3.0 .00 .00 .00 .00 .00 .00 3.1 .00 .00 .00 .00 .00 .00 3.2 .00 .00 .00 .00 .00 .00 3.3 .00 .00 .00 .00 .00 .00 3.4 .00 .00 .00 .00 .00 .00 3.5 .00 .00 .00 .00 .00 .00 3.6 .00 .00 .00 .00 .00 .00 3.7 .00 .00 .00 .00 .00 .00 3.8 .00 .00 .00 .00 .00 .00 3.9 .00 .00 .00 .00 .00 .00 4.0 .00 .00 .00 .00 .00 .00 4.1 .00 .00 .00 .00 .00 .00 4.2 .00 .00 .00 .00 .00 .00 4.3 .00 .00 .00 .00 .00 .00 4.4 .00 .00 .00 .00 .00 .00 4.5 .00 .00 .00 .00 .00 .00 4.6 .00 .00 .00 .00 .00 .00 4.7 .00 .00 .00 .00 .00 .00 4.8 .00 .00 .00 .00 .00 .00 4.9 .00 .00 .00 .00 .00 .00 5.0 .00 .00 .00 .00 .00 .00 1 RETURN INTENSITY PERIOD RAINFALL 5 56.95 10 68.83 20 71.36 30 76.57 50 81.70 80 84.02 1 RAINFALL HYETOGRAPH TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .42 .50 .52 .56 .60 .61 .2 1.46 1.77 1.83 1.97 2.10 2.16 .3 3.71 4.48 4.65 4.98 5.32 5.47 .4 6.55 7.92 8.21 8.81 9.40 9.67 .5 8.16 9.86 10.23 10.97 11.71 12.04 .6 7.38 8.91 9.24 9.92 10.58 10.88 .7 7.60 9.19 9.53 10.22 10.91 11.22 .8 7.14 8.62 8.94 9.59 10.24 10.53 .9 7.66 9.26 9.60 10.30 10.99 11.30 1.0 6.87 8.31 8.61 9.24 9.86 10.14 1 SR-3 1 ( NA ) STRIP NUMBER = 7 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 3.13 (COFF) RUNOFF COEFFICIENT = .76 (BET ) INITIAL CONCENTRATION TIME = .00 ZONING LENGTH AREA(I) ACCUMU. WIDTH TIME NUMBER (KM) (SQ.KM) AREA(I) (KM) (HR) 1 .13 .020 .020 .154 .003 2 .50 .390 .410 .778 .048 3 .50 .360 .770 .720 .029 4 .50 .340 1.110 .680 .033 5 .50 .330 1.440 .660 .038 6 .50 .270 1.710 .540 .048 7 .50 .090 1.800 .180 .048 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 1.43 .975 .2 2.65 .738 .3 3.13 .087 C1 = .338 C2 = .662 1 AREA-ROUTING UNIT-HYDROGRAPH TIME AREA I=2.7780 (I1 + I2)/2 C1 * (1) C2 * (4) (2) + (3) (HR.) (KM**2) * AREA = (1) = (2) = (3) = (4) .1 .975 2.709 1.354 .457 .000 .4572 .2 .738 2.050 2.379 .803 .303 1.1060 .3 .087 .241 1.146 .387 .733 1.1195 .4 .000 .000 .121 .041 .742 .7824 .5 .000 .000 .000 .000 .518 .5183 .6 .000 .000 .000 .000 .343 .3433 .7 .000 .000 .000 .000 .227 .2274 .8 .000 .000 .000 .000 .151 .1507 .9 .000 .000 .000 .000 .100 .0998 1.0 .000 .000 .000 .000 .066 .0661 1.1 .000 .000 .000 .000 .044 .0438 1.2 .000 .000 .000 .000 .029 .0290 1.3 .000 .000 .000 .000 .019 .0192 1.4 .000 .000 .000 .000 .013 .0127 1.5 .000 .000 .000 .000 .008 .0084 1.6 .000 .000 .000 .000 .006 .0056 1.7 .000 .000 .000 .000 .004 .0037 1.8 .000 .000 .000 .000 .002 .0025 1.9 .000 .000 .000 .000 .002 .0016 2.0 .000 .000 .000 .000 .001 .0011 2.1 .000 .000 .000 .000 .001 .0007 2.2 .000 .000 .000 .000 .000 .0005 2.3 .000 .000 .000 .000 .000 .0003 2.4 .000 .000 .000 .000 .000 .0002 2.5 .000 .000 .000 .000 .000 .0001 2.6 .000 .000 .000 .000 .000 .0001 2.7 .000 .000 .000 .000 .000 .0001 2.8 .000 .000 .000 .000 .000 .0000 2.9 .000 .000 .000 .000 .000 .0000 3.0 .000 .000 .000 .000 .000 .0000 3.1 .000 .000 .000 .000 .000 .0000 3.2 .000 .000 .000 .000 .000 .0000 3.3 .000 .000 .000 .000 .000 .0000 3.4 .000 .000 .000 .000 .000 .0000 3.5 .000 .000 .000 .000 .000 .0000 3.6 .000 .000 .000 .000 .000 .0000 3.7 .000 .000 .000 .000 .000 .0000 3.8 .000 .000 .000 .000 .000 .0000 3.9 .000 .000 .000 .000 .000 .0000 4.0 .000 .000 .000 .000 .000 .0000 4.1 .000 .000 .000 .000 .000 .0000 4.2 .000 .000 .000 .000 .000 .0000 4.3 .000 .000 .000 .000 .000 .0000 4.4 .000 .000 .000 .000 .000 .0000 4.5 .000 .000 .000 .000 .000 .0000 4.6 .000 .000 .000 .000 .000 .0000 4.7 .000 .000 .000 .000 .000 .0000 4.8 .000 .000 .000 .000 .000 .0000 4.9 .000 .000 .000 .000 .000 .0000 5.0 .000 .000 .000 .000 .000 .0000 1 FLOOD HYDROGRAPH BY AREA-ROUTING UNIT-HYDROGRAPH METHOD BASIN AREA = 1.80SQ.KM BASIN LENGTH = 3.13KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .14 .17 .18 .19 .21 .21 .2 .86 1.04 1.08 1.15 1.23 1.27 .3 2.87 3.47 3.60 3.86 4.12 4.24 .4 6.89 8.32 8.63 9.26 9.88 10.16 .5 12.53 15.15 15.70 16.85 17.98 18.49 .6 17.89 21.62 22.41 24.05 25.66 26.39 .7 21.60 26.10 27.06 29.04 30.98 31.86 .8 23.85 28.82 29.88 32.06 34.21 35.18 .9 25.28 30.55 31.67 33.99 36.26 37.29 1.0 23.75 28.71 29.76 31.94 34.08 35.05 1.1 18.21 22.01 22.82 24.48 26.12 26.86 1.2 12.30 14.87 15.41 16.54 17.64 18.15 1.3 8.15 9.85 10.21 10.96 11.69 12.02 1.4 5.40 6.52 6.76 7.26 7.74 7.96 1.5 3.58 4.32 4.48 4.81 5.13 5.28 1.6 2.37 2.86 2.97 3.18 3.40 3.49 1.7 1.57 1.90 1.97 2.11 2.25 2.32 1.8 1.04 1.26 1.30 1.40 1.49 1.53 1.9 .69 .83 .86 .93 .99 1.02 2.0 .46 .55 .57 .61 .65 .67 2.1 .30 .37 .38 .41 .43 .45 2.2 .20 .24 .25 .27 .29 .30 2.3 .13 .16 .17 .18 .19 .20 2.4 .09 .11 .11 .12 .13 .13 2.5 .06 .07 .07 .08 .08 .09 2.6 .04 .05 .05 .05 .06 .06 2.7 .03 .03 .03 .03 .04 .04 2.8 .02 .02 .02 .02 .02 .02 2.9 .01 .01 .01 .02 .02 .02 3.0 .01 .01 .01 .01 .01 .01 3.1 .00 .01 .01 .01 .01 .01 3.2 .00 .00 .00 .00 .00 .00 3.3 .00 .00 .00 .00 .00 .00 3.4 .00 .00 .00 .00 .00 .00 3.5 .00 .00 .00 .00 .00 .00 3.6 .00 .00 .00 .00 .00 .00 3.7 .00 .00 .00 .00 .00 .00 3.8 .00 .00 .00 .00 .00 .00 3.9 .00 .00 .00 .00 .00 .00 4.0 .00 .00 .00 .00 .00 .00 4.1 .00 .00 .00 .00 .00 .00 4.2 .00 .00 .00 .00 .00 .00 4.3 .00 .00 .00 .00 .00 .00 4.4 .00 .00 .00 .00 .00 .00 4.5 .00 .00 .00 .00 .00 .00 4.6 .00 .00 .00 .00 .00 .00 4.7 .00 .00 .00 .00 .00 .00 4.8 .00 .00 .00 .00 .00 .00 4.9 .00 .00 .00 .00 .00 .00 5.0 .00 .00 .00 .00 .00 .00